The "who" command lists the top-level objects that are currently displayed. The phony flag asks for just phony objects. Phony objects are typically objects that are drawn in the mged display, but are not actual database objects. Some phony objects are drawings from the vdraw command and the edgeuses drawn by the ev -u command. The real flag asks for just real objects, and the both flag asks for both real and phony objects. The default is just real objects. Any of the flags may be abbreviated by its first letter. The x command also lists displayed shapes, but in more detail.